Finding the Fourth Proportional to 158,343.96, 218,514.66 and 86,723.88
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Solution
The fourth proportional to 158,343.96, 218,514.66 and 86,723.88 is: 119,678.95
Step by Step Solution
- Step 1: Write the proportion equation
158,343.96 : 218,514.66 = 86,723.88 : x - Step 2: Convert to fraction form
158,343.96/218,514.66 = 86,723.88/x - Step 3: Cross multiply
158,343.96x = 218,514.66 × 86,723.88 - Step 4: Simplify right side
158,343.96x = 18,950,439,152.08 - Step 5: Solve for x
x = 18,950,439,152.08/158,343.96 - Step 6: Final answer
x = 119,678.95
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.